127928807 has 4 divisors (see below), whose sum is σ = 127963920. Its totient is φ = 127893696.

The previous prime is 127928753. The next prime is 127928821. The reversal of 127928807 is 708829721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 708829721 = 3881 ⋅182641.

It is a cyclic number.

It is not a de Polignac number, because 127928807 - 2⁶ = 127928743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127924807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11363 + ... + 19620.

It is an arithmetic number, because the mean of its divisors is an integer number (31990980).

Almost surely, 2^127928807 is an apocalyptic number.

127928807 is a deficient number, since it is larger than the sum of its proper divisors (35113).

127928807 is an equidigital number, since it uses as much as digits as its factorization.

127928807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35112.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 127928807 is about 11310.5617455545. The cubic root of 127928807 is about 503.8749676723.

The spelling of 127928807 in words is "one hundred twenty-seven million, nine hundred twenty-eight thousand, eight hundred seven".